Improvement in stove-grates



FFICE.

ALBERT J. ARNOLD, OF COLUMBUS, NEBRASKA.

IMPROVEMENT IN STOVE-GRATES.

Specification forming part of Letters Patent No. 134,238, dated December24, 1872.

To all whom it may concern:

Be it known that I, ALBERT J. ARNOLD, of Columbus, in the county ofPlatte and State of Nebraska, have invented a new and valuablelmprovement in Grates; and I do hereby declare that the following is afull, clear, and exact description of the construction and operation ofthe same, reference being had to the annexed drawing making a part ofthis specification, and to the letters and figures of reference markedthereon. V

Figure 1 of the drawing is a representation of a plan view of myinvention Fig. 2 is a sectional View of the same 5 and Fig. 3 is a frontview of the same.

This invention has relation to firegrates, in which the grate-barsextend upward to form a front grating; and it consists in providin gsuch a grate with a laterally-slidin g or reciprocating lower grate,having its bars perforated and extending upward in front, in contact andparallel with the bars of the upper grate, which is provided with lugsto support the lower grating, thereby forming a sectional curvedfire-grate especially adapted for burning fine coal or coal-dust.

Referring to the accompanying drawing, A designates the upper section ofmy improved fire-grate. This section is of the ordinary form offire-grates, but is provided with L-shaped lugs a depending from itsinner and outer edges. B designates the under section, consisting of theside bars 12 and transverse bars I), the latter corresponding to thebars 2 cf the upper section, and parallel therewith. The section B restson the lugs a, and, being shorter than the upper section, is capable oflongitudinal adjustment, enabling the spaces between the bars of theupper section to be en tircly or partially closed by the bars I). Thebars I) are perforated to let sufficient air pass through to promotecombustion. A greater quantity of air may be admitted by leaving thespaces open, or partially so. The lower section serves to prevent thefine coal or other fine fuel from falling through the grate, and is alsouseful as a means for regulating the draft. The section B is providedwith a stud, E, to be used in adjusting or shaking it. F designatespivot-arms, by means of which the grate may be hung so as to tilt. Theashes may be let down into the ash-pan by simply vibrating the lowergrate.

What I claim as my invention, and desire to secure by Letters Patent, is

A sectional fire-grate, consisting of a bent grate, A, and areciprocating grate, B, connected with the grate A by lugs, and havingperforated bars parallel with and extendingupward in front of the barsof the grate A, substantially as specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

ALBERT J. ARNOLD.

itncsses:

GEO. LEHMAN, E. V. CLARK.

